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  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
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<body>
  <script>
    class Person {
      // 程序员之间的约定: 以_开头的属性和方法, 是不在外界访问
      constructor(name, age) {
        this._name = name
        this._age = age
      }
      set name(value) {
        console.log("设置name")
        this._name = value
      }
      get name() {
        console.log("获取name")
        return this._name
      }
    }

    var p1 = new Person('why', 18)
    p1.name = 'kobe'
    console.log(p1.name)

    // 2.访问器的应用场景
    class Rectangle {
      constructor(x, y, width, height) {
        this.x = x
        this.y = y
        this.height = height
        this.width = width
      }
      get position() {
        return { x: this.x, y: this.y }
      }
      get size() {
        return { width: this.width, height: this.height }
      }

    }
    var rect1 = new Rectangle(10, 20, 100, 200)
    console.log(rect1.position)
    console.log(rect1.size)


  </script>
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